Subtract 90/7 from 56/12
1st number: 4 8/12, 2nd number: 12 6/7
56/12 - 90/7 is -172/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
56/12 = 56 × 7/12 × 7 = 392/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
90/7 = 90 × 12/7 × 12 = 1080/84 - Subtract the two like fractions:
392/84 - 1080/84 = 392 - 1080/84 = -688/84 - After reducing the fraction, the answer is -172/21
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